Need Backup & Sync Desktop Client with Certain Characteristics

I'm looking for a Windows 10 compatible desktop backup and sync app that has the following characteristics:

(1) Google Drive: Can backup files to Google Drive
(2) One-way Copying: Allows me to specify one-way copying. I do not want the backup app to modify the contents of my computer disc drives under any circumstances. In other words, if I add or remove files on my computer, I want the backup software to add or remove files on Google Drive, but if I add or remove files on Google Drive, the backup software should do **nothing** on my computer.
(3) User-friendly: Easy-to-use drag and drop interface.
(4) Maps Folder Hierarchy: I do not want to sync contents of a single "sync folder". I want to specify any combination of folders on my machine and have the backup software duplicate the folder hierarchy on Google Drive.

Is there anything like that on the market?

Thanks.

Hmm........

I've used several backup apps over the last 20 years. Second Copy, Free File Sync, now using SyncBackFree. Couple of others I can't recall.

2 and 4 are standard features of any such app I've ever considered. "One way" is often called "mirroring"---the backup is kept identical to the source.

3: "User Friendly Interface". That's a matter of opinion and they do vary. Free File Sync isn't very intuitive. Second Copy has the least cluttered and straightforward interface I've seen, but it isn't free although it has a 30 day free trial. 30 bucks if you want to continue using it, the last time I checked (10 years ago). SyncBackFree has a lot of choices and switches, but is more intuitive than Free File Sync and it has a better help file.

None are what I'd call "drag and drop" as there are dozens if not hundreds of variables involved.

1: Google Drive: I have no idea. Never used it. They may all work fine or fail totally.

They all work pretty much the same way, but use different terminology and interfaces---and therefore differ quite a bit regarding how a greenhorn might react to them.

I'd at least take a look at Second Copy if you might be willing to pay after the trial. It's been in development for at least 20 years. Very polished. I quit it on a whim because I would have had to pay 30 bucks again when I moved to Windows 7 and I wanted free software.

Automatic backup software - secure data with Second Copy

Thanks very much for the information, but I am looking for an app that can backup to a cloud service, particularly, Google Drive.

"backup to google drive" - Google Search

Look at the above link.

That's why I'm posting here asking around to see if there is a program that does everything I want. Google's Backup & Sync will modify your machine. I hate that. It's free, but it's just too light weight and lacks configuration options.

FreeFileSync:

FreeFileSync: Open Source File Synchronization & Backup Software

Just want to follow up and say that based on the recommendation ignatzatsonic made above, I looked into SyncBackFree and ended up purchasing SyncBackPro. I really love this software package. It allows multiple "profiles" each specifying different paths and containing different backup, sync or mirror information. I can back up to Google Drive. It doesn't choke on deep directory structures. It displays a very readable and thorough log file in HTML format after each mirror operation, so, for instance, I just mirrored some files to Google Drive that failed to copy because I had files copied from a shared folder and Google was denying write permission. With the SyncBackPro log file I quickly identified where the problem was, fixed things on Google Drive, reran the mirror and everything worked fine. SyncBackPro also allows you to run different profiles simultaneously, which comes in handy if you have a large amount of data to backup and want to leave the machine running all night. Wow, I love this package. It is EXACTLY what I needed. Like this forum too. I consistently get good answers & advice here.